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Recognised as Colour

#253DAF

  • #253DAF
  • Blue
  • Dark
  • Nearest: Slate blue

#253DAF is a blue with RGB values 37, 61, 175 and HSL 230°, 65%, 42%. It is a dark colour, so white text on it reaches 8.9:1 contrast (AAA for normal text). The nearest named colour is Slate blue.

Colour values

#253DAF#253DAF
HEX#253DAF
RGBrgb(37, 61, 175)
RGB (0–1)0.1451, 0.2392, 0.6863
RGB percentages14.5%, 23.9%, 68.6%
HSLhsl(229.6, 65.1%, 41.6%)
HSV / HSBhsv(229.6, 78.9%, 68.6%)
CMYK78.9%, 65.1%, 0%, 31.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,440,623
CSS custom property--colour: #253DAF;

Brightness & contrast

Relative luminance0.06826WCAG 2.x, 0 is black and 1 is white
Perceived brightness78 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.88:1
Contrast with white8.88:1WCAG normal text: AAA
Contrast with black2.37:1WCAG normal text: Fail
Greyscale equivalent#404040
Inverted#DAC250

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0051B3no red cones; affects about 1% of men; ΔE 15.8 from the original
Deuteranopia#0043ADno green cones; the most common form, about 1% of men; ΔE 7.2 from the original
Tritanopia#005B70no blue cones; rare, and affects men and women equally; ΔE 65.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.88:1WCAG large text: AAA
Contrast with black, large text2.37:1WCAG large text: Fail

Named colours

Slate blue · ΔE 15.2Royal blue · ΔE 17.9Rebecca purple · ΔE 18.8Midnight blue · ΔE 20.6Dark slateblue · ΔE 22.1Medium slateblue · ΔE 22.4
Nearest named CSS colourSlate blue (#6A5ACD)ΔE 15.21, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#AF9725
Analogous#2582AF, #5225AF
Triadic#AF253D, #3DAF25
Split complementary#AF5225, #82AF25
Tetradic#AF2582, #AF9725, #25AF52

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B1BCEF
Lighter +30%#8798E6
Lighter +20%#5D73DD
Lighter +10%#334FD4
Darker −10%#1C2E85
Darker −20%#13205B
Darker −30%#0A1131
Darker −40%#010207
More saturated +25%#0A2CCA
Less saturated −25%#404E95

Channel breakdown

R37
G61
B175
Red37 (14.5%)
Green61 (23.9%)
Blue175 (68.6%)
Hue229.57°
Saturation (HSL)65.09%
Lightness41.57%
Dominant channelBlue
Hex per channelR 25 · G 3D · B AF

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Every value on this page was computed from “253daf” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.